▎ 摘　　要

NOVELTY - Preparing graphene lithium-ion battery negative electrode composite material involves adding the twodimensional graphene nano sheet into the dispersing agent, using ultrasonic to uniformly disperse the twodimensional graphene nano sheet into the dispersing agent, forming uniform dispersion solution of the graphene, mixing the graphene with high molecular matrix material, then adding conductive additive. Under the condition of 110℃ and 900 rpm with a magnetic stirrer, the polymer material is uniformly attached to the two-dimensional graphene nanosheet to obtain a uniform mixed solution, injecting the mixed solution into the mould, applying a static magnetic field for 3-5 hours, heating and evaporating the dispersant at constant temperature of 50℃, directionally arranging the two-dimensional graphene nano sheet, after curing, obtaining the directionally arranged graphene lithium ion battery negative electrode composite material. USE - Method for preparing graphene lithium-ion battery negative electrode composite material. ADVANTAGE - The graphene lithium-ion battery negative electrode composite material prepared realizes the directional arrangement of graphene nanosheets, can build a fast lithium ion transmission channel, increases the distance between graphene nanosheets, and fully exerts its high specific surface area , the performance of the resulting composite material is much higher than that of other graphene hybrid materials. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a graphene lithium-ion battery negative electrode composite material, which comprises two-dimensional graphene molecular matrix material, dispersant and conductive additive, the mass fraction of the two-dimensional graphene nanosheets is 75-90 wt.% of the graphene lithium-ion battery negative electrode composite material, and the graphene nanosheets are realized by a static magnetic field acting on the graphene nanosheets its orientation; and 2. a lithium ion battery, which comprises negative, electrode, positive electrode and electrolyte, the positive electrode is composed of one or more of lithium cobaltate, lithium nickelate, nickel cobalt manganese ternary material, nickel cobalt lithium aluminate and lithium-rich manganese base material, the negative electrode is composed of graphene lithium ion battery negative electrode composite material.